请找出下列句子中错误,并改正成正确的句子.
问题描述：
请找出下列句子中错误,并改正成正确的句子.
1、He is a old man.
____________________
2、I haven't find my cat.
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3、I reading a story book.
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4、He name is jack.
____________________
5、Don't is late next time.
____________________
答
he is an old man old是元音要用an
I haven't finding my cat 两个动词有一个要改时态
I am reading a story book 缺少谓语am
His name is jack /He is jack 固定句式
Don't late next time 祈使句不能用谓语